Cynhaliwyd yr astudiaeth gan Uned Ymchwil Economaidd Cymru (WERU) a DCA (Cardiff) gyda chymorth nifer o sefydliadau eraill = Conducted by the Welsh Economy Research Unit (WERU) and DCA (Cardiff) with the assistance of a number of other organisations.
Effaith economaidd y diwydiannau celfyddydol a diwylliannol yng Nghymru : papur cyfarwyddyd = The economic impact of the arts and cultural industries in Wales : a briefing paper. Published by Cyngor Celfyddydau Cymru in 1998. Publication and catalogue information, links to buy online and reader comments.